Hitachi SJ Series, User Manual

Page: 324 / 786

12-13-17
Chapter 12
Inverter Function
12.13.10 Continuing motor operation during
instantaneous power failure
for deceleration and stop
• I want to decelerate and stop the motor even if the
power supply has not recovered yet in case of
instantaneous power failure.
• This function allows deceleration and stop of the
motor while maintaining the voltage under the
overvoltage level when the power supply is shut
down during operation.
• One of the three modes can be selected with
[bA-30] instantaneous power failure non-stop
selection.
• Instantaneous power failure non-stop operation is
activated when the input to the main power supply
(R, S, T) drops.
• When [bA-30] is 01 or 02, the motor decelerates
and stops after the function is activated. You need
to turn off the operation command and turn it on
again to restart after the stop. Even if the [bA-30] is
03, you still need to turn off the operation command
and turn it on again if the motor decelerated and
stopped without recovery after the function is
activated.
• If the control power supply (R0, T0) is not input
separately from main power supply, supply the P-N
voltage to the control power supply (R0, T0) to use
the instantaneous power failure non-stop function.
When using this function, disconnect the J51
connector line connected to the R0 and T0
terminals and connect the wire from main terminal
P to R0, and N to T0. Use electrical wire of
0.75mm
2
or larger.
Parameters
Item Parameter Data Description
Instantaneous power
failure non-stop
selection
[bA-30]
00 Disabled
01 Decelerates and stops, and maintains the stop status.
02
Decelerates and stops with constant DC voltage control,
and maintains the stop status.
03
Decelerates and stops with constant DC voltage control,
and maintains the stop status. If the power supply
recovers during the process, the operation continues.
Instantaneous power
failure non-stop
function starting
voltage
[bA-31]
(200 V class)
0.0~410.0(v)
(400 V class)
0.0~820.0(v)
This is the voltage level at which the instantaneous power
failure non-stop control starts when the internal power
supply voltage drops.
Instantaneous power
failure non-stop
frequency constant
voltage level
[bA-32]
(200 V class)
0.0~410.0(v)
(400 V class)
0.0~820.0(v)
Switches the deceleration temporarily to constant speed
operation when the internal power supply voltage
increases due to deceleration.
Instantaneous power
failure non-stop
deceleration time
[bA-34] 0.01~3600.00(s)
Deceleration time setting for instantaneous power failure
non-stop deceleration and stop operation.
Instantaneous power
failure non-stop
deceleration starting
range
[bA-36] 0.00~10.00(Hz)
The setting for starting deceleration by lowering frequency
during instantaneous power failure non-stop deceleration
and stop operation.
Instantaneous power
failure non-stop
constant DC voltage
control P control
[bA-37] 0.00~5.00
Proportional gain for PI control during constant DC voltage
control.
Instantaneous power
failure non-stop
constant DC voltage
control I control
[bA-38] 0.00~150.00(s)
Integral gain for PI control during constant DC voltage
control.
Output terminal
function [CC-01]~[C
C-07]
023
[IPS] Outputs the signal during instantaneous power
failure non-stop deceleration.
OFF: The function is not active.
ON: Instantaneous power failure non-stop deceleration in
function.
Q
A
!